Queue machines: An organization for parallel computation
We explore parallel system organizations based on a representation of programs which allows execution using a queue as a working store. The main advantage of such a representation, called Q-notation, is that multiple processors can be used in a very regular manner, so that a simple and natural mapping of parallel computations onto parallel processors is achieved. The proposed machines are characterized by very efficient and fast instruction issue, modularity with useful fault-tolerance properties, and simplified interconnection requirements. We define a Q-notation for program representation and discuss in general its capabilities and limitations in executing ordinary (sequential) and concurrent programs.
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